GoyaLab SAS
www.goyalab.com
Institut d’optique d’Aquitaine, rue François Mitterrand
- 33400 Talence
–
France
Version June 20
b.
Comparison of 2 files
The
“compare files”
button compares two files by calculating two coefficients based on both a
derivative and an integral calculation. The closer the coefficients are to 1 the more similar the two
spectra. These coefficients are then compared to the threshold set in the SETTINGS menu. If the two
coefficients are greater than their respective threshold, the curves are considered similar (marked with
a “
” icon)
. On the contrary, if at least one of the coefficients is less than the threshold, the curves are
considered different
(“
” icon).
Note: The Coefficient
“
I
”
will mainly focus the comparison of the curve shapes. The variation of the
intensity will not impact the similarity. The coefficient D will also take into account the intensity
difference between both curves.
c.
Set as a background
This function displays a spectrum directly on the MEASURE screen. To activate this function, press
long on the spectrum you want to display and select “set as a background” measure.
Note 1: only one spectrum at a time can be displayed as a background
Note 2: it is advisable to cut off the
‘
rainbow
’ display
mode to clearly see both spectra (see Section
5.2.c).
